This is the OEM:42X-81960-A2 rectifier for both the Yamaha 1988-1997 Yamaha TW200 and the FZR600R. However I purchased it for a 1993 xj600 Seca II. This fits the 92-94 Seca II wiring/connector perfectly. The only difference in the OEM rectifier for the Seca II has cooling fins on it. Ricks Motorsports has the same rectifier, but was not in stock, Part #: 210197. So far this is working excellently for my bike. The only reason I'm not giving it 5/5 stars is that it doesn't have the cooling fins, so it is NOT an exact replacement!